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    <title>Document</title>
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    <script>
        let uname = prompt("请输入您的姓名");
        let age = prompt("请输入您的年龄");
        let gender = prompt("请输入您的性别");
        document.write("您的姓名是：" + uname + "<br>");
        document.write("您的年龄是：" + age + "<br>");
        document.write("您的性别是：" + gender + "<br>");
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